Affiliation:
1. Peking University
2. Institute of Theoretical Physics
3. University of Chinese Academy of Sciences (UCAS)
4. Asia Pacific Center for Theoretical Physics (APCTP)
Abstract
The gravitational-wave energy-density spectra from cosmological first-order phase transitions crucially depend on the terminal wall velocity of asymptotic bubble expansion when the driving force from the effective potential difference is gradually balanced by the backreaction force from the thermal plasma. Much attention has previously focused on the backreaction force acting on the bubble wall alone but overlooked the backreaction forces on the sound shell and shock-wave front, if any, which have been both numerically and analytically accomplished in our previous studies but only for a bag equation of state. In this paper, we will generalize the backreaction force on bubble expansion beyond the simple bag model.
Published by the American Physical Society
2024
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Chinese Academy of Sciences
Key Research Program of Frontier Science, Chinese Academy of Sciences
China Manned Space Project
Publisher
American Physical Society (APS)